CN103297309B - For can redundant operation industrial communication network communication equipment and for the method that operates communication equipment - Google Patents
For can redundant operation industrial communication network communication equipment and for the method that operates communication equipment Download PDFInfo
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- CN103297309B CN103297309B CN201310064439.6A CN201310064439A CN103297309B CN 103297309 B CN103297309 B CN 103297309B CN 201310064439 A CN201310064439 A CN 201310064439A CN 103297309 B CN103297309 B CN 103297309B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/4026—Bus for use in automation systems
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Abstract
The present invention relates to a kind of for can the communication equipment of industrial communication network of redundant operation, it includes that at least one first and second transmitting and receiving unit, described first and second transmitting and receiving units are respectively provided with the interface of the network connection for industrial communication network.Signal processing unit and the first and second transmitting and receiving units connect.The network node of one-way linkage is connected with signal processing unit via coupling element.Signal processing unit is connected with coupling element via the first and second interfaces.Here, first interface is only provided for transmitting receives, by first, the packet that unit receives, and the second interface is only provided for transmitting receiving, by second, the packet that unit receives.
Description
Technical field
The present invention relates to a kind of for can the communication equipment of industrial communication network of redundant operation and a kind of method for operating communication equipment.
Background technology
In distributed industrial automated system, when record, assessment and transmission measurement and control data it should be ensured that complete and the most modified data particularly exist in the industrial processes strict to time requirement in real time.Avoid intentionally, the change that unintentionally or caused by error of performance because this can result in inconsistent system mode and the system failure with the economically downtime of serious consequence in industrial automation system.
Additionally, the interruption of the communication connection between the computing unit of industrial automation system may result in undesirably or the transmission of unnecessarily duplicate services request.This causes the extra load of communication connection of industrial automation system, and this may result in further system interference or fault.In industrial automation system, but generally caused special problem by the communication switching with relatively many relatively short message, thus aggravate the problems referred to above.
In order to compensate communication connection or the inefficacy of communication equipment, communication protocol, redundancy as seamless in high availability or Parallel Redundancy Protocol be exploited for high availability, can the industrial communication network of redundant operation.In the seamless redundancy of high availability defined in IEC standard 62439-3 (HSR) and parallel redundancy agreement (PRP), and to realize the undamaged redundant transmission of packet extremely short recovery time.According to the seamless redundancy of high availability and Parallel Redundancy Protocol, each packet is replicated by the communication equipment being transmitted, and is sent to receptor with two kinds of different paths.By the communication equipment of receiver-side, from reception data stream, filter out the redundant data packets representing copy.
A kind of method for setting up network described in the DE102008017192A1, described network includes the first network user with one group of port.Described port is connected with the port of other network user of network.In first method step, the port distributing to first network user is switched under the first operator scheme.In the first mode of operation, it is possible to receive via port and send test packet.According to other method step, send test packet via the port distributing to first network user.If additionally, the test packet in the test packet sent is not received by first network user again, then the port distributing to first network user is switched under the second operator scheme.In the second mode of operation, the message received via the port distributing to described first network user forwards via remaining port.In this way it is possible to avoid forming network rings when interconnection or extension complex network.
From the method for carrying out data transmission in ring communications network a kind of described in EP2282452A1, carry out data transmission according to the seamless redundancy of high availability in the process, and communication network includes at least one host node, source node and destination node.Each node has the first and second communication interfaces with corresponding first and second adjacent nodes.Additionally, each node is via the first communication interface receiving data frames, and by the change of received data frame or the most modified forward without extra delay via the second communication interface.The Frame of the first and second redundancies or the packet of sky are sent to its first or second adjacent node by host node.When receiving the Frame of two redundancies, source node fills corresponding Frame with process data in predetermined reservation region.Subsequently, each Frame having been filled with is transmitted to the first or second adjacent node of source node immediately and individually.Finally, destination node extracts process data from the first Frame having been filled with received by the Frame centering of redundancy.
A kind of network node for communication network described in the EP2343857A1, described communication network includes the first sub-network and the second sub-network being connected with the first sub-network.In the first sub-network, carry out data transmission period according to Spanning-Tree Protocol, in order to carry out data transmission in the second sub-network, apply the second protocol different from the agreement applied in the first sub-network.Network node design described in EP2343 857A1 is for the element as the second sub-network, and is designed as communicating in the second sub-network.Additionally, by means of spanning-tree feature, network node design is the spanning-tree root node for monitoring and control the second sub-network.Thus, by the Spanning-Tree Protocol applied in the first sub-network, the second sub-network can be considered dummy node.
A kind of known method for carrying out redundancy communication in a communications system from EP2413538A1, described communication system includes multiple communication network.Communication network is connected with each other via at least one switching node.Prevent the data being derived from the first communication network from returning back be passed to the first communication network from the second communication network based on the information limited before data is transmitted.
Summary of the invention
The present invention based on purpose be to propose a kind of for can the efficient and communication equipment of low cost of industrial communication network of redundant operation and a kind of method for operating such communication equipment.
According to the present invention, described purpose is achieved by communication equipment and a kind of method with the feature being described below of a kind of feature having and being described below.Be described below the present invention is advantageously improved scheme.
According to the present invention for the communication equipment of industrial communication network of redundant operation including that at least one first and second transmitting and receiving unit, described first and second transmitting and receiving units are respectively provided with the interface that the network for industrial communication network connects.Here, the first and second transmitting and receiving units have the identical network address and identical device identifier.Device identifier can be such as MAC Address.Signal processing unit and the first and second transmitting and receiving units connect.Signal processing unit has the redundant processing unit receiving unit received data bag for packet Parallel transmutation to be sent is located reason two side to the multiplexer module and being used for of the transmitting element of two sides.Redundant processing unit also includes that filter unit, described filter unit are designed as detecting received redundant data packets.The network node of one-way linkage is connected with signal processing unit via coupling element.Coupling element is preferably high-speed bus, and the network node of other one-way linkage such as can be connected with signal processing unit via described high-speed bus.Data transmission in industrial communication network such as according to the seamless redundancy of high availability or can be carried out according to Parallel Redundancy Protocol.
Additionally, according to the present invention, signal processing unit is connected with coupling element via the first and second interfaces.Here, first interface is only provided for transmitting receives, by first, the packet that unit receives, and the second interface is only provided for transmitting receiving, by second, the packet that unit receives.Additionally, redundant processing unit includes identifying unit, described mark unit is designed as in the redundant data packets received by being inserted by redundancy designator.Here, redundant processing unit is designed as by the way of by the packet received by the reception unit of two sides with without caching being transmitted to coupling element.A preferred design according to the present invention, packet includes at least one Frame, and redundancy designator is consisted of the inavid date inserted of Frame in a straightforward manner.
By the communication equipment according to the present invention, by including that the redundant processing unit managing the packet being buffered or signal processing unit save the most complete buffering of the packet received.This realizes simple in the case of low-power consumption and is achieved at low cost signal processing unit.A particularly preferred improvement project according to the present invention, the signal processing unit including multiplexer module and redundant processing unit realizes by means of field programmable gate array.Here, coupling element preferably has the back plate type switch (Backplane Switch) of the controller of arranging.It is connected additionally, back plate type switch can connect via at least one interconnection with the network node of at least one one-way linkage.
Additionally, field programmable gate array (FPGA) is for storing the table (agent node table, proxy node table) of the explanation with the network node to all one-way linkages being connected with coupling element.This realizes the simple management of network node that be connected, one-way linkage with communication equipment.Therefore, communication equipment can act as realizing in a straightforward manner such as the basis of the equipment for HSR/PRP agency (HSR/PRP-Proxy) or HSR/PRP redundancy box (HSR/PRP-RedBox).Being particularly likely to by the present invention or its design, HSP/PRP function is transferred in the assembly separated with coupling element or back plate type switch, and described assembly is made up of signal processing unit or FPGA.It is possible to realize in an efficient way front end solutions, described front end solutions the most such as supplements switch component as HSR/PRP headend equipment.Additionally, HSR/PRP function also is able to be integrated in the modular ethernet switches of real-time Data Transmission in media module.
According to a preferred improvement project of the communication equipment according to the present invention, the packet of mutual redundancy is identified by unified serial number.Additionally, distribute memory element for signal processing unit, described memory element is designed as the serial number for the most error-free the packet received of storage.Here, redundant processing unit is designed as checking the most stored serial number when receiving new packet.Additionally, be coupling element preferred allocation detector unit, described detector unit is designed as the redundancy designator for assessing in received packet and for abandoning the packet with redundancy designator.Therefore, only carried out the mark of redundant data packets by redundant processing unit, abandon and then implement in coupling element side.
Preferably, distributing counter unit for coupling element, described counter unit is designed as recording error-free and wrong the packet received.Additionally, counter unit is connected with assessment unit.Assessment unit be such as designed as the difference between error-free and wrong the packet received less than during predeterminable threshold value by the redundant network state that signal transmission is error-free.Additionally, assessment unit can be designed as having, with signal transmission, the network state that redundancy is lost in the case of the quantity of error-free the packet received increases and the quantity of the most wrong the packet received substantially is stagnated.According to another design of the present invention, assessment unit can also be designed as in the case of stagnating in the quantity of error-free and wrong the packet received transmitting network failure with signal.This is generally by such as acting on behalf of for HSR/PRP or the communication equipment of HSR/PRP redundancy box realizes simple network state and diagnoses.
According to the method according to the invention for operating the communication equipment in the industrial communication network of redundancy, described communication equipment includes that at least one first and second transmitting and receiving unit, described first and second transmitting and receiving units are respectively provided with the interface of the network connection for industrial communication network.Here, the first and second transmitting and receiving units have the identical network address and identical device identifier.Signal processing unit and the first and second transmitting and receiving units connect, and packet to be sent is transmitted to the transmitting element of two sides by described signal processing unit concurrently, and detects by the redundant data packets received received by unit.The network node of one-way linkage is connected with signal processing unit via coupling element.In industrial communication network, packet such as can be according to the seamless redundancy of high availability or according to Parallel Redundancy Protocol transmission.
According to the method according to the invention, signal processing unit is connected with coupling element via the first and second interfaces.Here, receive, by first, the packet that unit receives via first interface transmission, and receive, by second, the packet that unit receives via the second interface transmission.Additionally, signal processing unit redundancy designator is inserted received by redundant data packets in, and coupling element will be transmitted to by the packet that receives of unit that receives of two sides without caching.According to a preferred design of the method according to the invention, packet includes at least one Frame, and redundancy designator in a straightforward manner by inserting composition in Frame by inavid date.By the method according to the invention, save by signal processing unit completely buffering that received packet is commonly used up to now.This is also applied for managing the packet cached.Preferably, distribute to the redundancy designator in the packet received by detector unit assessment of coupling element, and abandon the packet with redundancy designator.Therefore only carried out the mark of redundant data packets by described signal processing unit, and abandon redundant data packets in coupling element side.
According to a preferred design of the method according to the invention, the packet of mutual redundancy is identified by unified serial number.Furthermore it is preferred that store the serial number of the packet received in the memory element distribute to signal processing unit the most error-freely.Thus when receiving new packet, signal processing unit can check the serial number of described new packet and the concordance of the most stored serial number in a straightforward manner.
Distribute to the packet that the counter unit of coupling element preferably records error-freely and receives wrongly.Therefore, assessment unit can difference between error-free and wrong the packet received less than predeterminable threshold value in the case of by the network state of the error-free redundancy of signal transmission.Wrong the packet received is determined preferably by means of cyclic redundancy check (CRC).According to another design of the method according to the invention, assessment unit has, with signal transmission, the network state that redundancy is lost in the case of the quantity of error-free the packet received increases and the quantity of the most wrong the packet received substantially is stagnated.Additionally, assessment unit such as can transmit network failure with signal in the case of the quantity of error-free and wrong the packet received is stagnated.This is generally by such as acting on behalf of for HSR/PRP or the communication equipment of HSR/PRP redundancy box realizes simple network state and diagnoses.
Accompanying drawing explanation
The present invention is elaborated with an embodiment below by way of accompanying drawing.Accompanying drawing illustrates:
Fig. 1 illustrates for can the communication equipment of industrial communication network of redundant operation；
Fig. 2 is shown through the schematic diagram of the data packet stream that traditional communication equipment processes；
Fig. 3 is shown through the schematic diagram of the data packet stream that the communication equipment according to Fig. 1 processes；
Fig. 4 is shown in the communication equipment according to Fig. 1 in the communication network of the data transmission having according to Parallel Redundancy Protocol (PRP)；
Fig. 5 is shown in the communication equipment according to Fig. 1 in the communication network of the data transmission having according to the seamless redundancy of high availability (HSR).
Detailed description of the invention
Shown, for the communication equipment 1 of industrial communication network 2 of redundant operation the first transmitting and receiving unit 11 and the second transmitting and receiving unit 12 can be included in FIG, described first transmitting and receiving unit and the second transmitting and receiving unit are respectively provided with the interface of the network connection for industrial communication network 2, in the present embodiment, described industrial communication network has two sub-networks 21.Adjunctively or alternatively in this, communication network 2 can include that, with the interconnective network node of loop configuration, described network node is linked on communication network 2 in loop configuration redundantly.In communication equipment shown in FIG, it is possible to according to the seamless redundancy of high availability or transmit packet according to Parallel Redundancy Protocol.
Two transmitting and receiving units 11,12 have the identical network address and identical MAC Address.The signal processing unit 13 realized by field programmable gate array (FPGA) is connected with the first and second transmitting and receiving units 11,12, and described signal processing unit has for packet to be sent being transmitted to the multiplexer module 131 of two transmitting elements 11,12 concurrently and being used for locating the redundant processing unit 132 of the packet 40,41 that reason two reception unit 11,12 receives.Redundant processing unit 132 includes that filter unit, described filter unit are designed as detecting received redundant data packets.The network node 31-33 of multiple one-way linkages is connected with signal processing unit 13 via the coupling element 14 realized by back plate type switch.The coupling element 14 with allocated controller 141 is correspondingly connected with the network node 31-33 of one-way linkage via interconnection connection.Via coupling element 14, produced packet 4 is being processed the destination node 31 being transmitted to one-way linkage afterwards by redundant processing unit 132.Signal processing unit 13 additionally has memory element 136, and in described memory element, storage has the table (agent node table) of the explanation with the network node 31-33 to all one-way linkages being connected with coupling element 14.
The signal processing unit 13 realized by means of field programmable gate array is connected with coupling element 14 via the first and second interfaces 15,16.Here, first interface 15 is only provided for transmitting receives, by first, the packet 40 that unit 11 receives, and the second interface 16 is only provided for transmitting receiving, by second, the packet 41 that unit 12 receives.
The redundant processing unit 132 distributing to signal processing unit 13 includes identifying unit 134, and described mark unit is designed as in the redundant data packets 40,41 received by being inserted by redundancy designator.In the present embodiment, packet includes at least one Frame.Redundancy designator is constituted by being inserted by inavid date in Frame.Additionally, the packet 40,41 received by two reception unit 11,12 is transmitted to coupling element 14 without caching by signal processing unit 13.Differ only in copy by two packets 400,401 receiving packet 40,41 that unit 11,12 receive and be transmitted to coupling element 14 via the first and second interfaces 15,16, pass through inserted inavid date or rather and distinguish.
In the case of data packet stream that schematically illustrate in fig. 2, that processed by traditional communication equipment, pass through signal processing unit 13 and abandoned redundant data packets.According to traditional communication equipment shown in fig. 2, signal processing unit 13 is only linked on coupling element 14 via interface 15.At the first and second transmitting and receiving units 11,12, receive the first data stream 71 or the second data stream 72 of input, described first data stream and the second mutual redundancy of data stream, and include multiple continuous print packet respectively.Therefore, in this example, each packet exists once as prototype version and exists once as copy.Here, the packet of mutual redundancy is identified by unified serial number.
If such as in the first data stream 71, the second packet 40 as prototype version runs into error of transmission, then determine in the second data stream 72 packet 41 being consistent as copy in signal processing unit 13 according to the serial number 401 distributing to described packet 40.Here, the packet 41 being consistent has the identical serial number 411 of the packet 40 as run into error of transmission.Therefore, exporting in the data stream 73 of coupling element 14 being oriented by signal processing unit 13, the packet 40 running into error of transmission as prototype version is replaced as the packet 41 being consistent of copy by it.Otherwise, the prototype version without error of transmission of corresponding packet is transmitted to coupling element 14, and its copy is abandoned by signal processing unit 13.For this kind of method, the packet of the data stream 71,72 of two inputs must be a fully buffered in the signal processing unit 13 of traditional communication equipment.
In contrast, that schematically illustrate in figure 3, by, in the data stream of the communication equipment process according to Fig. 1, coupling element 14 just abandoning redundant data packets.Different from shown traditional communication equipment in fig. 2, it is linked on coupling element 14 via first interface 15 and the second interface 16 according to the signal processing unit 13 of Fig. 3.According to Fig. 3, at the first and second transmitting and receiving units 11,12, also receive the first data stream 71 or the second data stream 72 of input, the described mutual redundancy of data stream, and include multiple continuous print packet respectively.As before, the packet of mutual redundancy is identified by unified serial number.
If in the first data stream 71, the second packet 40 as prototype version runs into error of transmission in example shown in figure 3, then determine in signal processing unit 13 in the second data stream 72 as copy, the packet 41 being consistent with identical serial number 411 also according to the serial number 401 distributing to described packet 40.
But, different from the example according to Fig. 2, two data streams 71,72 of input are forwarded to coupling element 14 as the data stream 73,74 exported with not substantially changing.Second packet 40 running into error of transmission of the first data stream 71 only inputted experiences the change carried out by signal processing unit 14 with the form inserting inavid date.The second packet 400 of the first data stream 73 of output and the second packet 40 of the first data stream 71 of input is distinguished by described inserted inavid date.On the contrary, the second packet 41 of the second data stream 72 of input is identical with the second packet 410 of the second data stream 74 of output.
According to example shown in figure 3, the packet 400 running into error of transmission as prototype version is just substituted as the packet 410 being consistent of copy by it in coupling element 14.Therefore, for this kind of method, it is not required that the packet of two data streams 71,72 of input is a fully buffered in signal processing unit 113.
Such as it is sufficient that there is being the serial number of the most error-free the packet received according to only storage in the memory element 135 distributing to signal processing unit 13 of Fig. 1.In order to identify the redundant data packets received, described signal processing unit 13 checks the serial number of described new packet and the concordance of the most stored serial number in a straightforward manner when receiving new packet.Redundancy designator in the packet received, as inavid date is preferably assessed by the detector unit 142 shown by FIG, and described detector unit is assigned to the controller 141 of coupling element 14, and abandons the packet with redundancy designator.This such as can be carried out based on cyclic redundancy check (CRC) (cyclic redundancy check).
Additionally, according to Fig. 1, counter unit 143 is assigned to the controller 141 of coupling element 14, the packet that described counter unit records error-freely and receives wrongly.Be assigned to the assessment unit 144 of controller 141 of coupling element 14 difference between error-free and wrong the packet received less than during predeterminable threshold value by the network state of the error-free redundancy of signal transmission.The packet received determines preferably by means of cyclic redundancy check (CRC) wrongly.
In the case of the quantity of error-free the packet received increases and the quantity of the most wrong the packet received substantially is stagnated, the signal transmission of assessment unit 144 has the network state that redundancy is lost.In the case of the quantity of error-free and wrong the packet received is stagnated, assessment unit 144 transmits network failure with signal.
Based on communication equipment 1 shown in FIG, it is capable of the redundancy box for PRP or HSR communication network 2 according to Figure 4 and 5, according to the seamless redundancy of high availability or according to Parallel Redundancy Protocol transmission packet in described PRP or HSR communication network.According to Fig. 4, redundancy box 1 is linked in the sub-network 21,22 of PRP communication network 2 respectively together with its transmitting and receiving unit 11,12, and described PRP communication network includes the PRP network node 51-53 of multiple bi-directional chaining.Additionally, redundancy box 1 is connected with the network node 31-33 of multiple one-way linkages.
HSR communication network 2 shown in Figure 5 includes multiple connecting 211-216 interconnective HSR network node 61-65 with loop configuration via network.Such as HSR network node 62 can belong to the row of above-mentioned network node, described HSR network node is assigned to the SCADA system (supervisory control and data acquisition, Supervised Control and data acquisition) of commercial production or process automation system.Additionally, according to Fig. 5, redundancy box 1 based on communication equipment 1 shown in FIG can also access in the loop configuration of HSR communication network 2.In this case, the network that redundancy box 1 is linked to HSR communication system 2 respectively by its transmitting and receiving unit 11,12 connects on 215,216.Being similar to Fig. 4, redundancy box 1 is additionally connected with the network node 31-33 of multiple one-way linkages.
The feature of previous embodiment can either also be able in the way of described being mutually combined realize individually.
Claims (16)
1. it is used for the communication equipment of the industrial communication network of energy redundant operation, has:
-at least one first transmitting and receiving unit and the second transmitting and receiving unit, described at least
One the first transmitting and receiving unit and the second transmitting and receiving unit are respectively provided with and lead to for industry
The interface that the network of communication network connects, wherein the first transmitting and receiving unit and second sends and receives
Unit has the identical network address and identical device identifier；
-the signal that is connected with described first transmitting and receiving unit and the second transmitting and receiving unit
Processing unit, described signal processing unit have for by packet Parallel transmutation to be sent give two
Side transmitting element multiplexer module and for locate reason two side reception unit receive
The redundant processing unit of the packet arrived, wherein said redundant processing unit includes filter unit,
Described filter unit is designed as detecting received redundant data packets；
-the network node of one-way linkage that is connected with described signal processing unit via coupling element,
It is characterized in that,
-described signal processing unit connects with described coupling element via first interface and the second interface
Connecing, wherein said first interface is provided for receive, by first, the packet that unit receives
It is transferred to described coupling element, and wherein said second interface is provided for connect by second
The packet that receipts unit receives is transferred to described coupling element,
-described redundant processing unit includes identifying unit, and described mark unit is designed as by superfluous
In redundant data packets received by remaining designator insertion, wherein said redundant processing unit is designed as
It is transmitted to institute by the way of by the packet received by the reception unit of two sides with without caching
State coupling element,
Being wherein that described coupling element distributes detector unit, described detector unit is designed as assessing
The received redundancy designator in packet, and it is designed as there is redundancy instruction for abandoning
The packet of symbol.
2. communication equipment as claimed in claim 1, wherein mutually the packet of redundancy passes through to unite
One serial number mark, and be wherein described signal processing unit distribution memory element, described in deposit
Storage unit is designed as the serial number for the most error-free the packet received of storage, and wherein
Described redundant processing unit is designed as checking when receiving new packet the most stored
Serial number.
3. communication equipment as claimed in claim 2, is wherein described coupling element distribution counting
Device unit, described counter unit is designed as recording error-free the packet received and wrong
The packet that receives, and wherein said counter unit is connected with assessment unit, institute's commentary
Estimate unit to be designed as at error-free the packet received and wrong the packet received
Between difference transmit error-free redundant network state less than in the case of the threshold value that can preset with signal.
4. communication equipment as claimed in claim 3, wherein said assessment unit be designed as
Quantity at error-free the packet received increases and the most wrong the packet received
Quantity substantially stagnate in the case of with signal transmission have redundancy lose network state.
5. communication equipment as claimed in claim 4, wherein said assessment unit be designed as
In the situation that the quantity of error-free the packet received and wrong the packet received is stagnated
Lower signal transmits network failure.
6. communication equipment as claimed in claim 2, wherein packet includes at least one data
Frame, and the inavid date the inserted composition that wherein said redundancy designator is by Frame.
7. communication equipment as claimed in claim 2, wherein said coupling element is high-speed bus,
And wherein the network node of other one-way linkage is via described high-speed bus and described signal processing
Unit connects.
8. communication equipment as claimed in claim 2, wherein said signal processing unit by means of
Field programmable gate array realizes, and wherein said coupling element is the controller with arranging
Back plate type switch, and wherein said back plate type switch via at least one interconnection connect with
The network node of at least one one-way linkage described connects.
9. communication equipment as claimed in claim 2, wherein data transmission according to high availability without
Stitch redundancy and/or carry out according to Parallel Redundancy Protocol.
10. for the method operating the communication equipment in the industrial communication network of redundancy, wherein,
-described communication equipment include at least one first transmitting and receiving unit and second send and
Receiving unit, at least one first transmitting and receiving unit described and the second transmitting and receiving unit divide
Not there is the interface of the network connection for described industrial communication network, wherein first send and receive
Unit and the second transmitting and receiving unit have the identical network address and identical device identifier；
-signal processing unit is sent with described first transmitting and receiving unit and second and receives
Unit connects, and packet to be sent is transmitted to sending out of two sides by described signal processing unit concurrently
Send unit, and detect by the redundant data packets received by described reception unit；
The network node of-one-way linkage is connected with described signal processing unit via coupling element,
It is characterized in that,
-described signal processing unit connects with described coupling element via first interface and the second interface
Connect, wherein via described first interface, the packet received by the first reception unit is transferred to
Described coupling element, and wherein will receive, by second, the number that unit receives via the second interface
It is transferred to described coupling element according to bag；
-described signal processing unit by redundancy designator insert received by redundant data packets in,
And described signal processing unit is by slow with nothing for the packet received by the reception unit of two sides
The mode deposited is transmitted to described coupling element,
Being wherein that described coupling element distributes detector unit, described detector unit is designed as assessing
The received redundancy designator in packet, and it is designed as there is redundancy instruction for abandoning
The packet of symbol.
11. methods as claimed in claim 10, wherein the packet of mutual redundancy is by unification
Serial number identifies, and wherein stores in the memory element distributing to described signal processing unit
Through the serial number of error-free the packet received, and wherein when receiving new packet,
Described signal processing unit check that the serial number of described new packet and the most stored sequence
The concordance of row number.
12. methods as claimed in claim 11, wherein distribute to the enumerator of described coupling element
The packet that unit record receives error-freely and wronglyly, and wherein assessment unit error-free
Difference between the packet that receives and wrong the packet received is less than predeterminable threshold value
In the case of by the network state of the signal error-free redundancy of transmission, and wherein by means of cyclic redundancy
Verification determines the packet received wrongly.
13. methods as claimed in claim 12, wherein said assessment unit receives error-free
The quantity of packet increase and the quantity of the most wrong the packet received substantially is stopped
With signal transmission, there is the network state that redundancy is lost in the case of stagnant.
14. methods as claimed in claim 12, wherein said assessment unit is error-free and wrong
The quantity of packet that receives stagnate in the case of transmit network failure with signal.
15. methods as claimed in claim 11, wherein packet includes at least one Frame,
And wherein said redundancy designator is constituted by being inserted by inavid date in Frame.
16. methods as claimed in claim 11, wherein according to the seamless redundancy of high availability and/or
Packet is transmitted according to Parallel Redundancy Protocol.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12157499.0 | 2012-02-29 | ||
| EP12157499.0A EP2634973B1 (en) | 2012-02-29 | 2012-02-29 | Communication device for a redundant industrial communication network and method for operating a communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103297309A CN103297309A (en) | 2013-09-11 |
| CN103297309B true CN103297309B (en) | 2016-12-28 |
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| US9729493B1 (en) * | 2012-06-25 | 2017-08-08 | Vmware, Inc. | Communicating messages over a social network to members of a virtualization infrastructure |
| US9923859B1 (en) | 2013-06-25 | 2018-03-20 | Vmware, Inc. | Creating a group of members based on monitoring a social network |
| US9929998B1 (en) | 2012-08-24 | 2018-03-27 | Vmware, Inc. | Tagged messages to facilitate administration of a virtualization infrastructure |
| US9817784B2 (en) * | 2013-03-22 | 2017-11-14 | Nxp Usa, Inc. | Multi-port transmitter device for transmitting at least partly redundant data, an associated control system, an associated method and an associated computer program product |
| US9887951B2 (en) | 2013-06-25 | 2018-02-06 | Vmware, Inc. | Graphing relative health of virtualization servers |
| EP2887593B1 (en) * | 2013-12-20 | 2019-10-09 | ABB Schweiz AG | Network interface for transmitting protection data of a power network |
| EP3130099B1 (en) * | 2014-04-09 | 2022-12-21 | Hirschmann Automation and Control GmbH | Method for a redundant transmission system with prp and energy-savings |
| TWI525451B (en) * | 2014-07-21 | 2016-03-11 | 緯創資通股份有限公司 | Storage system and data transferring method thereof |
| WO2016097458A1 (en) * | 2014-12-16 | 2016-06-23 | Metso Automation Oy | Redundancy in process control system |
| CN105812160B (en) * | 2014-12-31 | 2019-02-12 | 北京东土科技股份有限公司 | A kind of seamless redundant network mode adaptive method and device |
| DE102016110315A1 (en) * | 2015-06-03 | 2016-12-08 | Hirschmann Automation And Control Gmbh | Method for a redundant transmission system with PRP and buffering of data packets |
| DE102015010969A1 (en) * | 2015-08-26 | 2017-03-02 | Airbus Defence and Space GmbH | Network module for sending and / or receiving data packets from a network device and method |
| CN106209694B (en) * | 2016-07-25 | 2019-05-28 | 国电南瑞科技股份有限公司 | A kind of industrial ethernet switch of integrated PRP/HSR redundancy protocol |
| EP3301523A1 (en) * | 2016-09-30 | 2018-04-04 | Siemens Aktiengesellschaft | Redundant operable communications system for an industrial automation system and method of operation |
| EP3343303B1 (en) * | 2016-12-29 | 2019-06-26 | Siemens Aktiengesellschaft | Radio communication system and method for an industrial automation system |
| EP3389227B1 (en) * | 2017-04-10 | 2020-07-15 | General Electric Technology GmbH | Systems and methods for network failover in digital substations |
| CN109361587B (en) * | 2018-11-19 | 2020-12-04 | 广东电网有限责任公司 | Intelligent station control layer networking system and method based on HSR (high speed railway) ring network and PRP (redundancy protocol) redundant network |
| DE102019205634A1 (en) * | 2019-04-17 | 2020-10-22 | Robert Bosch Gmbh | Method for operating TSN-compatible network coupling elements |
| US11411807B2 (en) * | 2019-06-17 | 2022-08-09 | Abb Schweiz Ag | Method and system for detecting and mitigating cabling issues with devices in substation automation systems |
| US11258888B2 (en) | 2019-11-11 | 2022-02-22 | Cisco Technology, Inc. | Parallel redundancy protocol (PRP) using non-overlapping resource unit (RU) groupings on a radio |
| US11265208B1 (en) * | 2020-12-29 | 2022-03-01 | Honeywell International Inc. | Detecting path faults in parallel redundancy protocol communications |
| WO2023151345A1 (en) * | 2022-02-08 | 2023-08-17 | 华为技术有限公司 | Communication method, communication apparatus and communication system |
| US11897132B1 (en) * | 2022-11-17 | 2024-02-13 | Sarcos Corp. | Systems and methods for redundant network communication in a robot |
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2012
- 2012-02-29 EP EP12157499.0A patent/EP2634973B1/en active Active
- 2012-02-29 ES ES12157499.0T patent/ES2525755T3/en active Active
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- 2013-02-25 US US13/775,997 patent/US9356830B2/en active Active
- 2013-02-28 BR BR102013004912-3A patent/BR102013004912B1/en active IP Right Grant
- 2013-02-28 CN CN201310064439.6A patent/CN103297309B/en active Active
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| CN101335690A (en) * | 2007-06-29 | 2008-12-31 | 朗迅科技公司 | Seamless redundant system for IP communication network |
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Also Published As
| Publication number | Publication date |
|---|---|
| ES2525755T3 (en) | 2014-12-29 |
| EP2634973A1 (en) | 2013-09-04 |
| EP2634973B1 (en) | 2014-10-01 |
| CN103297309A (en) | 2013-09-11 |
| US20130223204A1 (en) | 2013-08-29 |
| BR102013004912B1 (en) | 2022-08-09 |
| BR102013004912A2 (en) | 2015-06-23 |
| US9356830B2 (en) | 2016-05-31 |
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